Method addItemLast

jsonrpc/src/linkedMap.ts:212–223

(item: Item<K, V>)

	}

	private addItemLast(item: Item<K, V>): void {
		// First time Insert
		if (!this._head && !this._tail) {
			this._head = item;
		} else if (!this._tail) {
			throw new Error('Invalid list');
		} else {
			item.previous = this._tail;
			this._tail.next = item;
		}
		this._tail = item;
	}

	private removeItem(item: Item<K, V>): void {
		if (item === this._head && item === this._tail) {